Paper trimming machine



Get. 10 1939; o. T. GYLLECK EFAL 2,175,461

PAPER TRIMMING MACHINE Filed July 20, 1938 2 Sheets-Sheet l 3 \nveflToTa5 0N T. Glleck TTwnan 15 me ig fl g V Nfomegg ck. 10, 1939. 0. r.GYLLECK n AL 2,175,461

PAPER TRIMMING MACHINE Filed July 20, 1938 2 Sheets-Sheet 2 PatentedOct. 10, 1939 UNITED STATES PATENT OFFICE ney, Spring Lake, Mich.,

assignors to The Challenge Machinery Company, Grand Haven, Mich., acorporation of Michigan Application July 20, 1938, Serial No. 220,210

Claims.

This invention relates to paper trimming and is more particularlyconcerned with novel construction and arrangements of attachmentswhereby packs of paper sheets may be effectively trimmed, particularlyat their corners so as to give the same a rounded or any other desiredcharacter of corner which may be wanted, the attachments being availablefor application to paper drilling machines of the general type andcharacter shown in the pending application Serial No 180,818, filedDecember 20, 1937, or to any other type of machine on which corneringwork is to be done.

The present invention has for its primary object and purpose anattachment to be applied to the head of the machine, which attachmentwill serve to trim the paper as the head is moved to the paper andthrough the same. Other attachments are for application to the tableupon which the packs of paper sheets are located, to thereby locate andproperly gauge the sheet packs with reference to the trimming cutter.And one object of the invention, in connection with the gauge means isto provide a very accurate means of adjustment for the gauge so that thetrimming of the paper may be accurately performed.

An understanding of the invention for the attainment of the objectsstated, as well as many others not at this time enumerated, may be hadfrom the following description, taken in connection with theaccompanying drawings, in which:

Fig. 1 is a side elevation and vertical section through a paper drillingmachine equipped with F our invention.

Fig. 2 is a fragmentary plan view of the table with the gaugeattachments applied thereto.

Fig. 3 is a fragmentary enlarged section through the micrometer gaugeadjusting mechanism.

Fig. 4 is a perspective View of the paper cutting assembly.

Fig. 5 is an under plan view thereof, and

Fig. 6 is an elevation illustrative of the trimming of a pack of papersheets. Like reference characters refer to like parts in the differentfigures of the drawings.

We have preferred to show and describe our invention as particularlyapplied to a drilling machine; it is to be understood, however, thatthis is done merely for illustration purposes and our invention may beapplied to any type of machine without in any way departing from thespirit thereof.

The paper drilling machine, to which our in- Vention is applied by Wayof illustration, includes a lower support and housing I above which is asupporting casting 2 which carries a horizontal table 3. The table 3 isrecessed at a point below the lower end of where the paper drillordinarily is vertically operated, in which recess is a wood block 4,shown as of circular outline, though the form of the block is notmaterial. Vertical posts 5, mounted for vertical reciprocation on thelower supporting part of the machine carry a drill head 6 which extendsfrom the post horizontally over the block 4, and on which the usualdrill spindle, electric motor for driving the same and interposed beltare mounted, as shown, but which form no part of the present invention.The posts 5 with the connected head 6 normally occupy anv upper positionunder the influence of compression springs I, but may be moveddownwardly to a lower position by operating a foot pedal 8 through aninterposed link 9 connecting them. It is of course to be understood thatthe means of moving the posts 5 and the attached drill head 6 in adownward direction is not a part of the present invention, and manytimes in practice the power operated means shown in the previouslyidentified application will be used. At the under forward side of thedrill head 6 a casing l is bolted, below which a block II is secured,preferably for forward and rearward adjustment in accordance with thedisclosure in a pending application, Serial No. 218,552, filed July 18,1938. The cutter assembly includes a member l2 (Figs. 1 and 4) which maybe detachably adjustably mounted on the block ll, being adjustable ashort distance vertically and held in place by releasable clampingscrews. The lower end of the member I 2 has a forward projection l3 witha substantially V-shaped vertical recess in its front face, in which acutting blade 14 of substantially V-shape, but curved at its apex asbest shown in Fig. 5, is detachably secured by the screw l5. The upperend of the cutter comes against a horizontal shelf I6 which has alocating and holding lug ll extending from. its lower side into a notchin the upper edge portion of the cut- 1 ter 14, thereby rigidly holdingthe cutter in place with reference to its carrying member l2. It is tobe understood that the cutter M at its lower edge is sharpened and hasan upwardly and rearwardly extending bevel, so that the parts of thepaper out from the paper pack at any corner thereof are more or lessprojected to the rear.

The paper sheet pack [8 will consist of a plurality of rectangularsheets of paper located one over the other in superimposed relation. Itbeing desirable that a corner of the sheet pack be 10- 55 cated over thewood block 4, a gauge is detachably secured to the table to one side ofsaid block, extending therefrom at an angle to both the sides and edgesof the table 3. This gauge comprises a bar I9 against which one side ofthe pack [8 is adapted to be brought. The gauge bar [9 has horizontallyextending wings 20 at its lower edge, with slots 2| therein at rightangles to the length of the bar [9 through which threaded bolts from thetable extend upwardly, and with wing nuts 22 screwing onto said bolts,whereby a range of adjustment is permitted for the gauge and by means ofwhich the gauge may be clamped securely in any adjusted position on thetable. From. the central portion of the gauge at the end edge of thesheets at right angles to the side edges of the sheet which bear againstthe gauge l9. Said end gauge is similar to the side gauge, insofar asthe part bearing against the paper is concerned, shown in Patent No.1,928,383. That is, a vertically positioned gauge bar 25 having a flatside is carried in a vertical carrier 24 (Fig. 6) from which the rod 23extends horizontally.

The structure associated with the rods 23 on both gauges issubstantially the same. A block 26 of metal is secured to the table 3.With one of the gauges, the gauge l9, said block is secured by-anysuitable screw or screws passing upwardly through the table into theblock 26. With the other gauge the under side of the block is slotted toreceive a bar 21, said bar 21 is screw connected to the block (Fig. 3),and the ends of the bar 21 are connected to the table 3 by screwspassing through its ends, as shown in Fig. 2. A cover plate 28 islocated over and secured by screws to the upper side of each of saidblocks 26. Said blocks are recessed underneath the plate 26 to receivethe bars 23. The bars 23 in their upper sides are provided each with anelongated slot or recess in which a coiled compression spring 29 islocated, bearing at its front end against a fixed cross bar connectedwith the block 25 and at its rear end bearing against the rear end ofthe recess in the bar 23, the tendency of the spring being to move thebar 23 inwardly until stopped by engaging against the bar 30. Amicrometer adjusting screw 3| is threaded through the rear end of theblock having its inner end engaging against the end of the bar 23, andby turning said screw the gauges may be adjusted accurately to a desiredposition. It is evident that the gauge bar [9 may be first adjusted byloosening the wing nuts at 22 and then tightening them to less than aclamping stage so that the wings 23 may slide underneath and after theproper position of adjustment of the gauge I9 has been obtained byoperating the screw at 31, the wing nuts 22 are then turned to tightlyclamp the gauge in position. The pack of paper sheets is located withthe cover which is to be trimmed over the wood block 4, bringing bothgauges in position so that the proper amount of material is cut off thecorner of the stock. The adjustment of the gauges is simple and can beperformed readily and quickly.

Back of the block 4 the table 3 has a vertical circular opening intowhich the upper end of a tube 32 extends, said tube extending downwardlythrough the support 2. A guard 32a of sheet metal is located back of,around and to each side of the upper end of the tube 32 and projectsabove the table 33 whereby the parts of the paper out from the pack ofsheets cannot pass rearwardly beyond said guard. A plate 33 mounted forsliding movement enters at the rear side of and extends across the tube32 when the drill head 6 is in upper position. It is withdrawn when thedrill head and the attached cutter are moved downwardly in accordancewith the structure including the vertically slotted weight 34, the rod35 carried by one of the posts 5 which extends into the slot of saidweight, and the pivoted lever 35 interposed between the slide plate 33and said weight. This structure need not be (specifically described asit is fully outlined in the application Serial No. 218,552, above noted.The plate 33 is to safeguard against the dropping of undesired articlesthrough the tube 32. The tube 32 at its lower end communicates with anelongated fan housing 31 in which an electric motor 38 to drive asuction fan 39 within the housing is mounted and which, operating whenthe machine is used, draws the severed portions of the paper into asuction draft of air caused by the fan to move downwardly through thetube 32 and be ejected at the outlet end of the fan housing 31'.

It is evident that the corners of a paper sheet pack such as indicatedat l8 may be very quickly and effectively trimmed with an immediatecarrying away of the severed portions, shown at 40 in Fig. 6, throughthe tube 32 and thence out at the end of the fan housing 31. The gaugesdescribed and their means of accurate adjustment insure a properlocation of a paper sheet pack with reference to the trimming knifewhich is brought downwardly thereagainst. The structure is veryefiective, relatively simple and has been especially satisfactory inuse.

The invention is defined in the appended claims and is to be consideredcomprehensive of all forms of structure coming within their scope.

We claim:

1. In combination, a horizontal table, a gauge bar located over saidtable having an inner gauge face in a vertical plane, horizontal wingsex tending from the lower edge of said gauge bar, said wings havingslots therein substantially at right angles to the length of the bar,means extending through said slots for releasably holding said gauge barin adjusted position, spring means associated with the gauge barnormally tending to move the bar diagonally rearwardly toward the rearand side edges of the table and in a direction at right angles to thelength of the bar, and manually operable adjusting means for adjustingthe bar in an opposite direction, as specified.

2. In combination with a horizontal table, a gauge bar located thereoverhaving a gauge face located in a vertical plane, wings extending atright angles from the lower part of the gauge bar and bearing againstthe upper side of the table, said wings having slots therein at an angleto the length of the gauge bar, means extending through said slots forreleasably holding said gauge bar in adjusted position, a rod connectedwith and extending from the gauge bar, a housing in which the rod isslidably received, spring means located within said housing acting onsaid rod to move the gauge bar in one direction, and an adjusting screwthreaded through the housing against the end of said rod to move thesame and the connected gauge bar a predetermined distance in theopposite direction.

3. In a device of the class described, gauge means to locate a pack ofpaper sheets in a predetermined position including, a gauge bar, a rodconnected with and extending from said bar, a housing in which said rodis slidably received,

spring means within said housing acting on said rod to move the gaugebar in one direction, and an adjusting screw threaded through thehousing against the end of said rod to move the same and the connectedgauge bar a predetermined distance in the opposite direction.

4. In combination, a horizontal table, gauge means thereon adapted tolocate a corner of a pack of sheets of paper in a predeterminedposition, a cutter disposed in a position to cut the corners of saidpack, means for mounting said cutter for vertical reciprocation, a tubehaving its upper end extending into said table at a point back of thecorner of the paper sheet pack to be cut, means for creating a suctionin said tube, said cutter having an upward and rearward bevel wherebywhen the paper is cut on downward movement of the cutter the partssevered are directed toward said tube and guard.

5. A device of the class described comprising, a horizontal table, twogauges mounted on the top thereof to locate the corner of a pack ofpaper sheets in a predetermined position, one of said gauges includingan elongated bar having a vertical face thereon adapted to engage oneside of said pack, and the other of said gauges including a vertical baradapted to have substantially a point contact with each sheet at anotheredge of said pack, a rod connected with and extending from one of saidbars, a housing in which the rod is slidably received, means in saidhousing to force said bar in one direction, and an adjusting screwthreaded through the housing engaging said rod to move the same and theconnected bar in the opposite direction.

OLAF T. GYLLECK. FREEMAN BARNEY.

